DE3030556A1 - FLUORELASTOMER WATER-BASED PAINT AND COATING AGENT - Google Patents

Description

Fluoroelastomer paints and coatings

Water base

The invention relates to a water-based fluoroelastomer paint and coating material with improved Adhesion to the substrate.

Fluoroelastomers have excellent resistance to heat, weather, oil, solvents and chemicals, so that the most varied of surfaces and substrates such as fabrics, fibers, metal, plastics, etc. with those containing them Agents are coated or impregnated.

A solvent-containing fluoroelastomer paint is known and coating agents (hereinafter referred to as fluoroelastomer varnish for the sake of simplicity), that is, a fluoroelastomer and an organic solvent mixed with an aminosilane compound as a vulcanizing agent contains in order to improve its adhesion to the substrate (Japanese interpretation 18346 / 1972). This paint ensures good adhesion to the surface of the substrate, however is the essential use of the organic solvent from the standpoint of economy and safety unfavorable. A water-based fluoroelastomer varnish is also known which comprises an aqueous fluoroelastomer dispersion in a mixture with a polyamine compound (e.g. hexamethylene diamine carbamate, N, N-dicynnamylidene-1,6-hexanediamine) represents as a vulcanizing agent (see company publication "Viton" No. 5, April 1961, from Du Pont). However, since the paint is this. Kind of not a satisfactory one Has adhesive strength, are the roughening (e.g. by blasting) the surface of the substrate and / or the use of a suitable adhesive is required.

It has now been found that by adding a certain special aminosilane compound to the fluoroelastomer

130013/1094

3030558

varnish the adhesion to the substrate is significantly improved, so that on roughening and use an adhesive can be dispensed with. When the aminosilane compound along with a certain special Amine compound is added, becomes an improvement the physical properties, in particular the tensile strength, of a paint film produced with the paint achieved in addition to the improvement in adhesion to the substrate. In addition, the paint has advantageously a much longer useful life than a solvent-type fluoroelastomer varnish. As another The advantage occurs when the paint is sprayed on no thread formation occurs, even if it contains the fluoroisomer in high concentration.

The main object of the invention is accordingly a water-based fluoroelastomer varnish with improved adhesive strength on the substrate with or without an increase in the tensile strength of the paint film produced with it.

The water-based fluoroelastomer varnish according to the invention contains (A) an aqueous fluoroelastomer dispersion mixed with (B) an aminisilane compound of the formula

₀ NXC ₃ H ^ Si (OR) (I)

2 I Y

< ^CH 3> 3-y

in which R is a methyl or ethyl radical, X is a single bond, -fCUH.NH-K - {- C-NH -} - or

⁴ Il

0
- (- C ₂ H ₄ -NH-C ₂ H ₄ -NH -) - and y for a whole

Number of 2 or 3, and optionally with (C) one Amine compound in which at least one terminal amino group is directly attached to an aliphatic hydrocarbon radical is bound.

The fluoroelastomer used for the purposes of the invention is a highly fluorinated elastic copolymer, preferably an elastic copolymer, the units 130013/1094

3030558

of vinylidene fluoride with units of at least one other contains fluorine-containing, ethylenically unsaturated monomers and, for example, a vinylidene fluoride content of not less than 40 mol%. A typical example of such advantageous elastic copolymers is an iodine-containing fluoroelastomer containing a polymer chain consisting essentially of units of Contains vinylidene fluoride and at least one other fluoroolefin copolymerizable therewith as well as iodine atoms, those at the ends of the polymer chain in an amount of 0.001 to 10% by weight, preferably 0.01 to 5% by weight, based on the weight of the elastomer, are bound (see Japanese Patent Application Laid-Open No. 40543/1977). Examples of these other fluorine-containing ethylenically unsaturated monomers are hexafluoropropene, pentafluoropropene, Trifluoroethylene, trifluorochloroethylene, tetrafluoroethylene, vinyl fluoride, perfluoro (methyl vinyl ether), perfluoro (ethyl vinyl ether) and perfluoro (propyl vinyl ether). Of the various fluoroelastomers are vinylidene fluoride / hexafluoropropene copolymers and vinylidene fluoride / Tetrafluoroethylene / hexafluoropropene terpolymers are preferred.

As an aqueous fluoroelastomer dispersion, a fluoroelastomer emulsion, obtained by emulsion polymerization of said monomers is used will. Also suitable are aqueous dispersions of the fluoroelastomers obtained by emulsion, suspension or bulk polymerization of the monomers mentioned, Isolating the formed fluoroelastomer from the reaction mixture, milling the isolated fluoroelastomer, and redispersing the ground fluoroelastomer in water, optionally with the aid of a surface-active one Means have been obtained. The fluoroelastomer content of the aqueous dispersion can be 10 to 70% by weight and is preferably 30 to 60% by weight. This fluoroelastomer content can be easily achieved by concentrating or diluting. If necessary, the

130 013/1094

3Q3055S

aqueous fluoroelastomer dispersion any conventional additives, e.g. a pigment, an acid acceptor or contain a filler in addition to the fluoroelastomer.

The aminosilane compound (I) is effective as a vulcanizing agent and contributes to improving the adhesive strength of the paint. In this connection, it should be noted that many different types of aminosilane compounds are suitable for improving the adhesive strength of solvent-type fluoroelastomer lacquers, but only the aminosilane compound of the formula (I) is useful for improving the adhesive strength of the water-based fluoroelastomer lacquers according to the invention, because the aminosilane compound (I) gives no gelation, while ^the. other "Aihinosilanverbindungen cause gelation Examples of suitable Aminisilanverbindungen (I) are y-aminopropyltrimethoxysilane, γ- aminopropyltriethoxysilane, γ- (beta-aminoethyl) aminopropyltrimethoxysilane, γ- (beta-aminoethyl) aminopropyltriethoxysilane, y- (ß-aminoethyl) aminopropylmethyldimethoxysilane,] / - ureidopropyltriethoxysilane, γ- (ß- (ß-aminoethyl) aminoethyl) aminopropyltrimethoxysilane etc. 'sized form advantage adhesive, as this ensures a greatly improved effect without gel formation. The hydrolysis can take place, for example, by treating the aminosilane compound with water, as a result of which at least some of the alkoxy radicals represented by -OR are converted into -OH.

The amine compound usable as an optional component serves as a vulcanizing agent. Typical examples are monoamines (e.g. ethylamine, propylamine, butylamine, Benzylamine ,. Allylamine, n-amylamine and ethanolamine), Diamines (e.g. ethylenediamine, triethylenediamine, tetramethylenediamine, Hexamethylenediamine and 3,9-bis (3-amino-

130013/1094

3030558

propy1) -2,4,8,1O-tetraoxaspiro / 5,57undecane), polyamines (e.g. diethylenetriamine, triethylenetetramine and pentaethylenehexamine). Of these amine compounds, those with at least two terminal amino groups are preferred, while 3,9-bis (3-aminopropyl) -2,4,8,1O-tetraoxaspiro / 5 _y 5_ / undecane is particularly preferred.

The water-based fluoroelastomer varnishes of the present invention can be prepared by adding the aminosilane compound (I) and optionally the amine compound to one

'.O aqueous fluoroelastomer dispersion given and the Ingredients are stirred well until the mixture is uniform. If used, common additives can be used such as pigments, acid acceptors and fillers before, during and / or after the addition of the aminosilane compound (I) and / or admixed with the amine compound. As mentioned earlier, the use of the previously hydrolyzed Aminosilane compound (I) has the advantage that gel formation in the paint obtained is prevented.

When the aminosilane compound (I) alone, i.e. H. without amine compound is used, its added amount is 1 to 30 parts by weight, preferably 2 to 20 parts by weight per 100 parts by weight of the fluoroelastomer. When the amine compound is included, the total amount is Aminosilane compound (I) and amine compound are usually 0.5 to 30 parts by weight, preferably 1 to 20 parts by weight per 100 parts by weight of the fluoroelastomer, the molar ratio of the aminosilane compound (I) to the amine compound 1:99 to 80:20.

A common acid acceptor can be used. Typical marriage Examples are oxides and hydroxides of divalent metals (e.g. magnesium, calcium, zinc and lead). as Fillers are, for example, silicon dioxide, clay, talc, diatomaceous earth and carbon black.

The water-based fluoroelastomer paints of the invention

130013/1094

can be applied to substrates by conventional methods (e.g. by painting, immersion or spray application) or used to impregnate the substrates and at temperatures from room temperature (e.g. 15 ° C) to 2OO ° C for a sufficient time to produce a film with excellent adhesion to the substrate and form greatly improved tensile strength.

As already mentioned, the fluoroelastomer lacquers according to the invention are water-based compared to conventional water-based fluoroelastomer coatings in terms of adhesive strength and tensile strength greatly improved. They have a longer service life (e.g. 2 weeks to 1 month at 25 ° C) than Fluoroelastomer lacquers of the solution type (e.g. about 10 hours at 25 ° C) and cause even at high fluoroelastomer concentrations (e.g. 60% by weight) do not string, so that they are very easy to handle and thick paint films can form. Since no organic solvent is used in them, they are non-flammable and do not cause environmental pollution.

The paints and coating compositions according to the invention Water-based can be used as anti-corrosion paints or protective coating agents in various industries and technical fields as well as sealing material or adhesives be used. They can also be used as electrically conductive coating agents.

The invention is further illustrated by the following examples. In these examples, the amounts given relate to in parts and percent by weight unless otherwise specified.

Examples 1 to 4 and comparative examples 1 to 3 (scratch test)

Mixtures A and B of the composition mentioned below were mixed and thoroughly mixed in a weight ratio of 100: 5 a 74 µm wire screen, using a fluoroelastomer

130013/1094

Water-based paint was obtained.

Mixture A parts

Aqueous fluoroelastomer dispersion (fluoroelastomer content 60%; containing a nonionic surface-active Medium "Nissan Nonion HS 208"

(Manufacturer Nippon Oil and Fats Co., Ltd.) 166

Magnesium oxide 5

Medium thermal black 30

Nonionic surfactant "Nissan Nonion HS 208" 2

Water 50

Mixture B

Aminosilane compound 90

Weight ratio

Magnesium oxide 3

Medium thermal black 20

Non-ionic surfactant

"Nissan Nonion HS 208" 2

Water 50

An aluminum sheet 100 mm long, 50 mm wide and 1 mm thick was degreased with acetone. On the degreased sheet, the paint prepared in the manner described was applied by spray application and 10 Mi-. grooves dried at a temperature of 50 to 70 ° C. The spray application and the drying were repeated twice more, a 100 to 150 μm thick film being obtained. The paint film was ^{cured at 150 °} C. for 1.5 hours. The cured film was subjected to the scratch test according to JIS (Japanese Industrial Standard) K 6894 to examine the properties of the paint film. The results were expressed in 5 rating numbers and are shown in Table 1. For comparison, the experiment described above was repeated, but using an amine compound instead of the aminosilane compound. The results are also given in Table 1.

130013/1094

3030558

Table 1 Evaluation at
the scratch test example Aminosilane compound
or amine compound 5 1 A-1100 5 2 A-1120 4-5 3 A-1160 5 4 * 2) A-1100 Comparison
example Order as a result
Gel formation
not possible 1 A-1125

A-1100: A-1120: A-1160: A-1125:

N, N-dicinnamylidene-1,6-hexanediamine

3,9-bis (3-aminopropyl) 2_j_4,8,10-tetraoxaspiro / 5 j 57undecan

i (OCH ₂ CH ₃ )

1 - 2

i (OCH ₃ ) ₃ ;

₂₂₂₂₂ CH ₇ ) ₃ ; CH ₃ COCH ₂ CH ₂ NHCH ₂ Ch ₂ NH-

(Aminosilane compound terminal amino group)

CH ₂ CH ₂ CH ₂ Si (OCH ₃ ) ₃

x2)

x3).

In Example 4, the aminosilane compound A-1100 was previously completely hydrolyzed with water to give NH ₉ CH ₉ CH — CH ₉ Si (OH). ^{zz ö}

In Examples 1 to 3 very slight gelation took place in the fluoroelastomer dispersion, but in the In the case of Example 4, no gelation occurred.

Examples 5 to 7 and comparative example 4 (test for tear-off strength)

In the manner described in Example 1, a paint film was formed on a substrate. The paint film was

in the form of a 10 mm wide strip cut so far that the surface was slightly scratched, and then subjected to the 180 ° tear-off test, in which one end of the Strips with an autograph "IS-500" (made by Shimadzu Corp.) at 24 ° C at a speed of

130013/1094

50.0 + 2.5 mm / min, was torn off. The results are mentioned in table 2. For comparison, the experiment described above was repeated, but using an amine compound was used in place of the aminosilane compound. The results are also given in Table 2.

Table 2 example

Comparative example 4

Aminosilane A-1100 compound or amine compound

A-1100

A-1100 3, 9-bis (3-aminopropyD-2,4,8,1O-tetraoxaspiro / ^ 5.5_7 ~ undecan

Underground

Surface". blasted ⁵ "'

Tear-off strength (kg / cm)

Aluminum sheet

no

2.53

2.51

Iron sheet

2.03

Sheet iron

Yes
0.15

x2)

In the case of Examples 5 to 7, the paint film did not peel off but cracked, so that the tear resistance is indicated by the value at the break. In the case of Comparative Example 4, the film separated from the substrate, so that the tear strength is indicated by the value at the time of separation.

The subsurface was made with Tosa emery of 177 µm radiated under a wind load of 5 bar.

Example 8 (properties of paint film)

In the manner described in Example 1, but with different Quantities of the aminosilane compound A-1100, water-based fluoroelastomer paints were prepared. Each paint was sprayed with a Spray gun applied to an aluminum sheet coated with polytetrafluoroethylene and dried. This coating was repeated 2 more times. This was followed by curing for 1.5 hours at 150 ° C., with a thickness of about 100 μm Paint film was formed. The obtained paint film

130013/1094

was stripped from the sheet metal and tested for modulus at 100% elongation, tensile strength and elongation according to JIS K 6301. The results are given in Table 3.

Table 3

A-1100
(Parts) ^x1) 100% module
N / mm ² tensile strenght
N / mm ² strain 5 2.35 7.55 500 10 3.92 8.04 240 15th 8.14 9.61 140 20th 9.32 10 110

The amount of A-1100 is per 100 parts of fluoroelastomer based.

Example 9 and comparative example 5 (determination of the service life and spray application tests)

Mixtures A and B of the following composition were made in a weight ratio of 100: 5 as in Example 1 mixed to obtain a water-based fluoroelastomer paint.

Mixture A parts aqueous fluoroelastomer dispersion (fluoroelastomer content 60; containing a nonionic

Surfactant "Nissan Nonion HS 208") 166

Magnesium oxide 3

Medium thermal black 20

Nonionic surfactant "Nissan Nonion HS 210" 2

Water 50

Mixture B

A-1100 90

Water 10

For comparison, the following mixtures A and B were prepared in the same manner as described above in Weight ratio of 100: 22.2 mixed to obtain a solution-type fluoroelastomer paint became.

130013/1094

Mixture A parts

Fluoroelastomer 100 Magnesium oxide 3 Medium thermal soot 20th Methyl ethyl ketone 225 Methyl isobutyl ketone 90 Mixture B

A-1100 10.8

Ethanol 89.2

The fluoroelastomer paint was placed in a glass bottle with a lid and left at 24 ° C, to determine the service life of the paint. In the case of the water-based paint (Example 9) gelation of the solid components occurred after 30 days and redispersion of the gel was impossible. In the case of the solution type paint (Comparative Example 5), there was a gradual increase in viscosity after 4 hours was found and after 8 hours all of the paint had turned into a gel.

The fluoroelastomer paint was applied with a spray nozzle of 0.8 mm diameter under a spray pressure of 3.0 bar applied to an aluminum sheet. In the case of the solution type paint (Comparative Example 5) Filament formation took place immediately after the start of the spray application, while the water-based paint (Example 9) could be sprayed onto a uniform film without any problems.

Examples 10 to 14 and Comparative Examples 6 to 19 (properties of paint films)

A mixture A and a mixture B and / or C having the following said compositions were combined to form a homogeneous mixture, the said Amounts of the aminosilane compound and / or the amine compound and then filtered through a 74 µm wire screen

130013/1094

to obtain a water-based fluoroelastomer varnish.

Mixture A parts aqueous fluoroelastomeric dispersion (fluoroelastomer content 60%; containing a nonionic

Surfactant "Nissan Nonion HS 208") 166

Magnesium oxide 3

Medium thermal black 20

Nonionic surfactant "Nissan Nonion HS 208" 2

Water 50

Mixture B

Aminosilane compound 50

Water 50

Mixture C

Amine compound 50

Water 50

The paint was sprayed onto a with Polytetrafluoroethylene coated aluminum sheet applied and dried. These operations were still repeated twice, followed by curing at 150 ° C. for 30 minutes. Here, a 150 µm thick paint film was made educated. The film was peeled off the panel and tested for tensile strength in accordance with JIS K 6301. The results are listed in Table 4.

In the manner described above, but using the aminosilane compound A-1125 (CH ₃ COCH ₂ Ch ₂ NHCH ₂ -CH ₂ NHCH ₂ CH ₂ CH ₂ Si (OCH ₃ ) ₃ ), which contains no terminal amino group, instead of the aminosilane compound A-1100 a paint was made. However, all of the paint turned into a gel and could not be used for paint purposes.

130 013/1094

Table 4 Comparison
example Amiη connection
Mole Tensile strength
ability,
N / mm example Aminosilane
link
Mole * 3,9-bis (3-aminopropyl) -
2_j_4,8,10-tetraoxaspiro-
/ _5 _r _5 / undecane (0.005) 12.3 10 A-1100
(0.005) Ethylenediamine
(0.005) 6.7 11 A-1100
(0.005) Ethanolamine
(0.005) 5.8 12th A-1100
(0.005) Triethy1entetramine
(0.005) 9 13th A-1100
(0.005) - 4.7 14th A-1100
(0.01)

7 8 9

10 11

12 13 14

15 16 3,9-bis (3-aminopropyl) -, ^, 10-tetraoxaspiro- (0.01)

(0.01) (0.01)

Ethylenediamine
Ethanolamine

Tetraethylene tetramine (0.01)

Hexamethylene diamine carbamate (O ₅ Ol)

N ₅ N'-dicinnamylidene-1,6-hexanediamine (0.01) m-phenylenediamine (0.01) benzidine (0.01)

9.1

5.9

4.5 8.3

9.1

4.6

2.94 2.65 2.84

17 18 19

A-1100 (O _f O5) A-10000 (0.05)

A-1100 (0.05)

A-1100 (0.05)

A-1100 (0.05) p, p ¹ -D! Aminodiphenylether (0.01)

Hexamethylene diamine (0.005) 7.65

N, N'-dicinnamylidene-1,6-paint hexanediamine (0.005) through

Gel formation

impossible m-phenylenediamine (0.005) 4.5

Benzidine

(0.005)

4.6

p, p'-diaminodiphenyl ether 4 _S 71 (0.005)

130013/1094

♦ moles based on 100 g of the fluoroelastomer.

Examples 15 to 20 and Comparative Example 20 (properties of the paint films and tear-off tests)

Fluoroelastomer paints were prepared in the manner described in Example 10 but with different amounts of the aminosilane compound and the amine compound. The paint films made from the paints were tested for tensile strength in accordance with JIS K 6301. For comparison, a prepared in the manner described in Example 10 fluoroelastomer water-based paint was sprayed onto an iron plate, the previously degreased with acetone and for 10 minutes at 50 ° to 70 ⁰ C was dried. These measures were repeated twice, a 100 to 150 μm thick paint film being formed which was ^{cured at 150 °} C. for 30 minutes. This cured film was cut in the form of a strip 100 mm wide so that the sheet was slightly scratched, and then subjected to the 180 ° peel test in which one end of the strip was marked with an autograph "IS-500" (made by Shimadzu Corp. .) was peeled off at 24 ° C at a rate of 50.0 ± 2.5 mm / minute. The results are given in Table 5.

Table 5

Example A-1100 3,9-bis (3-aminopropyl) - pull-tear-

Mol * 2 ^ 4,8 ^ 10-tetraoxaspiro- festig- festig-

/ _5, _5 / undecane, mol * keit ₂ speed

N / mm N / cm

15 ·· 0.008 0.002 9.6 10.8
solved 16 0.006 0.004 11.5 4.9
solved 17th 0.005 0.005 11.3 - 18th 0.004 0.006 11.3 3.8
solved 19th 0.002 0.008 11.3 3.1
solved 20 ·· 0.01 0 4.7 14.7.
solved

1 30013/1094

Table 5 (cont.) 3,9-bis (3-aminopro-
py 1) -2, 4 , §_ , 10-tetra-
oxaspir <V5 _f _5 / undecane 3030556 Comparison
example A-1100
Mole * 0.01 Tensile tear-off
firm-firm
speed
N / mm N / cm 20th 0 9.1 1.9
solved

• moles based on 100 g of the fluoroelastomer.

** In the case of Examples 15 and 20, the paint film had a thickness of about 350 µm.

Example 21 and comparative example 21 (service life and spray application tests)

Mixtures A, B and C of the following composition were mixed in the manner described in Example 10 to form a water-based fluoroelastomer lacquer, the A-1100 and 3,9-bis (3-aminopropyl) -2,4,8,10-tetraoxaspiro - / ßä / undecane in an amount of 0.005 mol per 100 g of the fluoroelastomer.

Mixture A parts

Aqueous fluoroelastomer dispersion (fluoroelastomer content 60%; containing the nonionic Surfactant "Nissan Nonion HS 208") 166

Magnesium oxide 3

Medium thermal black 20

Nonionic surfactant "Nissan Nonion HS 210" 2

Water 50

Mixture B

A-1100. 50

Water 50

Mixture C

3j_6-bis (3-aminopropyl) -2, 4,8,10-tetraoxaspiro-Z.5 _r _5 / undecane 50

Water 50

The following mixtures were used for comparison A, B and C mixed with a solution type fluoroelastomer paint containing 0.005 moles each of A-1100 and

130013/1094

3,6-bis (3-aminopropyl) -2,4,8,10-tetraoxaspiro / _5 _f jj / undecane

per 100 g of the fluoroelastomer was obtained:

Mixture A parts

Fluoroelastomer 100

Magnesium oxide 3

Medium thermal black 20

Methyl ethyl ketone 225

Methyl isobutyl ketone 90

Mixture B

A-1100 20

n-butanol 80

Mixture C

3j_6-jBis (3-aminopropyl) -2,4,8,10-th traoxaspi ro-

^ 5jj / d 50

n-butanol 80

The fluoroelastomer paint was placed in a glass bottle with a lid and allowed to stand at 24 ° C, to determine the service life of the paint. In the case of the water-based paint (Example 21) gelation occurred after 30 days and it was impossible to redisperse the gel. With the paint of the solution type (Comparative Example 21), a gradual increase in viscosity was observed after about 4 hours, and after about 10 hours, all of the paint had turned into a gel.

The fluoroelastomer paint was spray applied with a spray nozzle 0.8 mm in diameter applied to an aluminum sheet at an injection pressure of 2.94 bar. In the case of paint of the solution type (Ver- same example 21) thread formation took place immediately after the start of spraying, while the paint water-based (Example 21) sprayed on without any disturbance to form a uniform paint film could be.

130013/1094
X

Claims (5)

FROM KREISLER SCHÖNWALD blSHOLD FUES FROM KREISLER KELLER SELTING WERNER PATENTANWÄLTE Dr.-Ing. by Kreisler 11973 Dr.-Ing. K. Schönwald, Cologne Dr.-Ing. K. W. Eishold, Bad Soden Dr. J. F. Fues, Cologne Dipl.-Chem. Alek von Kreisler, Cologne Dipl.-Chem. Carola Keller, Cologne Dipl.-Ing. G. Selting, Cologne Dr. H.-K. Werner, Cologne AvK / AX DEICHMANNHAUS AM HAUPTBAHNHOF D-5000 COLOGNE 1 August 12, 1980 Daikin Kogyo Co., Ltd., No. 1-12-39, Umeda-Kita-ku, Osaka-shi, Osaka-fu (Japan). Patent claims 1. .Fluoroelastomer paints and coatings, containing (A) an aqueous fluoroelastomer dispersion mixed with (B) an aminosilane compound of the formula H ₂ NXC ₃ H ₆ -Si- (OR) in which R is a methyl or ethyl radical, X for a single bond, -fC-, Η.ΝΗ -} -, -fC-NH -) - or ^{Δ 4} Il
0 4C ₂ H ₄ -NH-C ₂ H ₄ NH -) - and y is an integer of 2 or 3, and optionally with (C) an amine compound in which at least one terminal Amino group is bound directly to an aliphatic hydrocarbon radical. 2. Fluoroelastomer paints and coatings after Claim 1, characterized in that the dispersion is mixed with the aminosilane compound. 130013/1094 Telephone: (0221) 131041 Telex: 8882307 dopa d Telegram: Dompotent Cologne ORIGINAL INSPECTED 3. Fluoroelastoraer paints and coatings according to Claim 1 or 2, characterized in that the dispersion with the aminosilane compound and the Amine compound is mixed. 4. Fluoroelastomer paints and coatings according to Claims 1 to 3, characterized in that the aminosilane compound is partially or completely is hydrolyzed. 5. Fluoroelastomer paints and coatings according to Claim 1 or 3, characterized in that in the amine compound at least two terminal Amino groups are bound directly to an aliphatic hydrocarbon radical. 130013/1094